<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="initial-scale=1,minimum-scale=1">
    <title>Title</title>
</head>
<body>
<!--这是容器-->
<div id="app">
<p>{{msg}}</p>

</div>
</body>
</html>